Speed w/ ordinary shoes 12.1 mi/h Runner Speed w/ INSTRUCTIONS: special shoes 1. State the null and alternative hypotheses. 2. State the level of significance and critical value. A 12.5 mi/h 14.4 mi/h 15.0 mi/h C 11.6 mi/h 11.4 mi/h 3. Calculate the 11.2 mi/h 11.6 mi/h ttest. 12.4 mi/h 11.8 mi/h 4. Interpret the result. 11.6 mi/h 12.0 mi/h 15.0 mi/h 14.9 mi/h 5. State conclusion. G.

E D R F V T Y U G H B N M 6.6 8.3 J K 8.1 6.9 Alt 8.3 L 7.7 9.0 P ? 11 PrtSc Ctrl PgUp 7.2 9.3 7.6 } 4) The high school PE teachers in CMCSS want to start a new fitness program. A group of math students in each building help to monitor how long it takes eleventh graders to run a mile. Based on the following data from a random sample of ten students, what is the estimate of the population mean time it takes eleventh graders to run a mile? Enter Shift PgDn ThinkPad

7:46 PM Sun Apr 30 Mc Graw McGr x ALEKS - Jay... Hill Homework 10 (3.1, 3.2) Question 4 of 15 (1 point) | Question Attempt: 1 of Unlimited Part: 0 / 2 Part 1 of 2 AA Design proje... b price that wi... Skip Part Recheck www-awu.aleks.com W Ninja (a) Determine the time at which the population is at a maximum. Round to the nearest hour. X The population is at a maximum approximately 1 hours after the culture was started. The population P (t) of a culture of the bacterium Pseudomonas aeruginosa is given by P (t) = − 1701t² +82,000t+ 10,000, where t is the time in hours since the culture was started. Try again Log in Wordtune -... Start Page Save For Later ZUZU MILIawill LLC. All Rights Reserved. + 94% ation Mac... n... Jaydem V Español oo E 8. K Submit Assignment Terms of Use | Privacy Center | Accessibility

For each situation, state the null and alternative hypotheses: (Type "mu" for the symbol u , e.g. mu > 1 for the mean is greater than 1, mu < 1 for the mean is less than 1, mu not =1 for the mean is not equal to 1. %3D Please do not include units such as "mm" or "$" in your answer.) (a) The diameter of a spindle in a small motor is supposed to be 6.5 millimeters (mm) with a standard deviation of 0.18 mm. If the spindle is either too small or too large, the motor will not work properly. The manufacturer measures the diameter in a sample of 15 spindles to determine whether the mean diameter has moved away from the required measurement. Suppose the sample has an average diameter of 6.39 mm. Ho: Ha: (b) Harry thinks that prices in Caldwell are lower than the rest of the country. He reads that the nationwide average price of a certain brand of laundry detergent is $22.35 with standard deviation $1.27. He takes a sample from 4 local Caldwell stores and finds the average price for this same…